Demi Lovato has bravely opened up about her battle with mental illness.

The Cool for the Summer singer made a speech at the Democratic National Convention yesterday in a bid to support Hilary Clinton.

During the height of her fame, the former child star suffered from addiction, depression, an eating disorder and even resorted to self harm.

Speaking at the convention, she said: "I am lucky. I had the resources and support to get treatment at a top facility. Unfortunately, too many Americans from all walks of life don’t get help, whether they fear the stigma or cannot afford treatment."

Demi bravely opened up about mental health (Image: Getty)

The singer urged the stigma to end (Image: REX/Shutterstock)

The star spoke out about the struggle people can face trying to hide their mental health issues due to the stigma that still surrounds the topic.

“We can do better. Every one of us can make a difference by getting educated on this epidemic and its frightening statistics and by breaking the stigma.”